19720798

素因数分解:

$2^1\times {\mathrm{23}}^1\times {\mathrm{89}}^1\times {\mathrm{4817}}^1$

素因数の和:4931

約数の個数: 16

約数和(自身を含む): 31220640

約数和(自身を除く): 11499842

約数列:

[1, 2, 23, 46, 89, 178, 2047, 4094, 4817, 9634, 110791, 221582, 428713, 857426, 9860399, 19720798]

約数ペア:

[(1, 19720798), (2, 9860399), (23, 857426), (46, 428713), (89, 221582), (178, 110791), (2047, 9634), (4094, 4817)]